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Debt and Floor Plan Payable - Summary of Long Term Debt (Detail) - USD ($)
$ in Thousands
Sep. 28, 2019
Mar. 30, 2019
Debt Instrument [Line Items]    
Total debt $ 44,330 $ 54,330
Total long-term debt 44,330 54,330
Revolving Credit Facility Maturing in 2023 [Member]    
Debt Instrument [Line Items]    
Total debt 31,900 41,900
Obligations Under Industrial Revenue Bonds Due 2029 [Member]    
Debt Instrument [Line Items]    
Total debt $ 12,430 $ 12,430